Transitioning colours with wait(), but wait() seems to be working incorrectly?

Hi, trying to do some cool color effects and I'm running into some issues

The following code is supposed to change the value of a Color3Value, and it works fine for a few milliseconds and then gets slower then stops.

Here's my code:

local Red = 255
local Green = 0
local Blue = 0
	

while wait() do 
for i = 0,255,1 do
wait()
Green = i
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end

for i = 0,255,1 do
wait()
Green = i
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end


for i = 255,0,-1 do
wait()
Red = i
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end

for i = 0,255,1 do
Blue = i
wait()
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end

for i = 255,0,-1 do
wait()
Green = i
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end

for i = 0,255,1 do
wait()
Red = i
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end

for i = 255,0,-1 do
Blue = i
wait()
script.Parent.Parent.Colour.Value = Color3.new(Red/255,Green/255,Blue/255)
end
end

I'm not sure why this is happening, can someone clue me in ?